22442542 has 8 divisors (see below), whose sum is σ = 33721632. Its totient is φ = 11202000.

The previous prime is 22442513. The next prime is 22442561. The reversal of 22442542 is 24524422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8134 + ... + 10537.

It is an arithmetic number, because the mean of its divisors is an integer number (4215204).

Almost surely, 2^22442542 is an apocalyptic number.

22442542 is a deficient number, since it is larger than the sum of its proper divisors (11279090).

22442542 is a wasteful number, since it uses less digits than its factorization.

22442542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19274.

The product of its digits is 5120, while the sum is 25.

The square root of 22442542 is about 4737.3560136431. The cubic root of 22442542 is about 282.0702924884.

Adding to 22442542 its reverse (24524422), we get a palindrome (46966964).

The spelling of 22442542 in words is "twenty-two million, four hundred forty-two thousand, five hundred forty-two".